Abstract: More and more clinical attention has been paid to uterine rupture. The perinatal uterine rupture of cicatricial uterus such as cesarean section and myomectomy is easy to be vigilant and recognized. However, the uterine rupture of non cesarean scar sites often has a variety of medical history and atypical symptoms. It is not easy to diagnose, and easy to misdiagnose, miss diagnosis. The treatment could be delayed, which lead to the serious adverse maternal and child outcomes. In this paper, 4 cases of uterine rupture in the scar area of non-cesarean section were reported. These cases were secondary to the previous cesarean section, the natural labor and artificial separation of placenta, the traffic accident and the ectopic pregnancy after laparoscopic salpingectomy.

Key words:  Pregnant women；, Uterine rupture；, Signs and symptoms；, Pregnancy Outcome；, Risk factors